On July 24, 2026, Nvidia, Microsoft, Meta, and 47 other technology companies, venture-capital firms, and nonprofits signed an open letter titled “Open Weights and American AI Leadership,” urging Washington not to restrict open-weight AI models and arguing that open weights are crucial to U.S. AI leadership.
Nvidia CEO Jensen Huang first shared the letter in his first post on X, with 25 initial signatories. Notable names absent from that first wave included OpenAI. Within a day, support widened and the number of signatories doubled as OpenAI, Google, AMD, Cisco, and others joined. Anthropic did not sign the letter.
What the letter argues
Open-weight models are AI models that anyone can download, inspect, modify, and run on their own infrastructure. The signatories outline several reasons Washington should avoid restrictions.
Broader access to the AI economy
Open weights let startups, businesses, universities, and public institutions build on advanced models without training one from scratch or paying frontier-model prices for every task. The letter frames this as matching the right model to the right job at the right cost.
Competition across the AI stack
The letter argues that open weights increase competition among model developers, cloud providers, chip makers, and application and service vendors, which helps spread the benefits of AI and reduce costs.
Customer control and vendor lock-in
The letter states that open weights give customers greater control and help avoid vendor lock-in, allowing organizations to control their data, adapt models to their needs, and deploy them where they choose.
Risks and the case against prohibition
The letter acknowledges that open weights carry real risks, since released weights are beyond the original developer’s control and modified versions are hard to trace. Its response is that the answer is not prohibition: in a world where attackers sometimes use advanced AI, defenders may need models with comparable capabilities, and open models can let vulnerabilities be found and remediated across many teams.
It argues openness may be one of the most important paths to AI safety and security, because relying solely on closed models is not inherently safe and concentrating advanced capability behind a few closed models can create single points of failure.
Specific policy requests
The signatories ask policymakers to expand access to compute for startups and researchers, invest in shared training assets such as datasets, tools, and evaluation frameworks, and keep the frontier plural by avoiding premature restrictions that stifle competition or drive innovation overseas.
The letter also warns policymakers not to conflate legitimate model-development techniques with misappropriation, stating that distillation, the practice of using one model’s outputs to train another, should not be confused with misappropriation.
Context
The letter arrives amid accusations that Chinese labs extracted intelligence from U.S. models, including Anthropic’s Fable. Washington’s response remains unclear, and Anthropic is the lone U.S. frontier lab not on the list.
The source document is available at Nvidia’s site.
FAQ
What is the open letter about open-weight AI?
On July 24, 2026, 50 technology companies, venture-capital firms, and nonprofits signed a letter titled “Open Weights and American AI Leadership,” urging Washington not to restrict open-weight AI models. Nvidia CEO Jensen Huang first shared it on X.
Which companies signed the open-weight AI letter?
The 50 signatories include Nvidia, Microsoft, Meta, OpenAI, Google, AMD, and Cisco, along with venture-capital firms and nonprofits. Anthropic did not sign.
Why do these companies want open-weight AI unrestricted?
The letter argues that open-weight models give more people access, support competition, and let users control their own data. The letter says closed models create single points of failure and argues defenders need capabilities comparable to attackers.
Related coverage
- White House Reportedly Moves to Restrict Open-Source AI Models
- Poolside releases Laguna S 2.1, an open-weight coding model it says beats rivals many times its size
Related coverage
- White House Reportedly Moves to Restrict Open-Source AI Models
- Poolside releases Laguna S 2.1, an open-weight coding model it says beats rivals many times its size
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